<!doctype html>
<html>
    <head>
        <meta charset="utf-8">
        <title>Geo3D - ECHARTS-GL</title>
        <meta name="viewport" content="width=device-width, initial-scale=1, user-scalable=no">
        <meta name="apple-mobile-web-app-capable" content="yes"> <!-- Fullscreen Landscape on iOS -->
        <link rel="stylesheet" href="./common.css">
    </head>
    <body>
        <div id="main"></div>
        <script src="https://rawgit.com/ecomfe/echarts/master/dist/echarts.min.js"></script>
        <script src="../dist/echarts-gl.js"></script>
        <script src="lib/jquery.min.js"></script>
        <script src="lib/dat.gui.js"></script>
        <script>
            var chart = echarts.init(document.getElementById('main'));
            chart.showLoading();

            $.getJSON('data/buildings.json', function (buildingsGeoJSON) {

                chart.hideLoading();

                echarts.registerMap('buildings', buildingsGeoJSON);

                var regions = buildingsGeoJSON.features.map(function (feature) {
                    return {
                        name: feature.properties.name,
                        value: Math.random(),
                        height: Math.max(Math.sqrt(feature.properties.height), 0.1)
                    };
                });

                chart.setOption({

                    series: [{
                        type: 'map3D',
                        map: 'buildings',
                        shading: 'hatching',

                        environment: '#fff',

                        hatchingMaterial: {
                            hatchingTextures: [
                                'asset/tam/hatch_0.jpg',
                                'asset/tam/hatch_1.jpg',
                                'asset/tam/hatch_2.jpg',
                                'asset/tam/hatch_3.jpg',
                                'asset/tam/hatch_4.jpg',
                                'asset/tam/hatch_5.jpg'
                            ],
                            textureTiling: [40, 20]
                        },

                        postEffect: {
                            enable: true,
                            screenSpaceAmbientOcclusion: {
                                enable: true,
                                radius: 8,
                                intensity: 1.2
                            },
                            edge: {
                                enable: true
                            }
                        },
                        groundPlane: {
                            show: false
                        },
                        light: {
                            main: {
                                intensity: 1,
                                shadow: true,
                                shadowQuality: 'high',
                                alpha: 30
                            },
                            ambient: {
                                intensity: 0
                            },
                            ambientCubemap: {
                                texture: 'asset/canyon.hdr',
                                exposure: 0,
                                diffuseIntensity: 0.1
                            }
                        },
                        viewControl: {
                            alpha: 80,
                            distance: 100,
                            minBeta: -Infinity,
                            maxBeta: Infinity
                        },

                        itemStyle: {
                            areaColor: '#000'
                        },

                        silent: true,

                        instancing: true,

                        boxWidth: 200,
                        
                        regionHeight: 1,

                        data: regions
                    }]
                });

                var config = {
                    color: '#000'
                };
                var gui = new dat.GUI();
                gui.addColor(config, 'color').onFinishChange(function () {
                    chart.setOption({
                        series: [{
                            itemStyle: {
                                areaColor: config.color
                            },
                            postEffect: {
                                edge: {
                                    color: config.color
                                }
                            }
                        }]
                    })
                });
            });
            window.addEventListener('resize', function () {
                chart.resize();
            });
        </script>
    </body>
</html>